Harden RF node control and agent updates

tests/test_rf001_capture_runner.py

@@ -0,0 +1,48 @@
+"""Software-only process evidence tests for the Python RX runner."""
+
+from __future__ import annotations
+
+import hashlib
+import json
+from pathlib import Path
+import sys
+
+from tools.rf001_capture_runner import run_capture
+
+
+def test_python_runner_persists_child_exit_and_hash(tmp_path: Path) -> None:
+    child = tmp_path / "child.py"
+    capture = tmp_path / "capture.cs8"
+    capture_bytes = b"software-only-capture-evidence\x00\x01"
+    child.write_text(
+        "from pathlib import Path\n"
+        f"Path({str(capture)!r}).write_bytes({capture_bytes!r})\n",
+        encoding="utf-8",
+    )
+    arguments = tmp_path / "arguments.json"
+    arguments.write_text(json.dumps(["-B", str(child)]), encoding="utf-8")
+    stdout = tmp_path / "stdout.txt"
+    stderr = tmp_path / "stderr.txt"
+    started = tmp_path / "started.json"
+    result = tmp_path / "result.json"
+
+    exit_code = run_capture(
+        Path(sys.executable),
+        arguments,
+        capture,
+        stdout,
+        stderr,
+        started,
+        result,
+    )
+
+    start_record = json.loads(started.read_text(encoding="utf-8"))
+    final_record = json.loads(result.read_text(encoding="utf-8"))
+    assert exit_code == 0
+    assert start_record["state"] == "RUNNING"
+    assert start_record["rf_tx"] == 0
+    assert final_record["exit_code"] == 0
+    assert final_record["capture_size"] == len(capture_bytes)
+    assert final_record["sha256"] == hashlib.sha256(capture_bytes).hexdigest()
+    assert final_record["runner_error"] is None
+    assert final_record["rf_tx"] == 0